The Dornish Water Gardens, a.k.a. Seville’s Alcazar Palace, Spain.

Braavos, a.k.a. Girona, Spain.

Left; by Macall B. Polay/courtesy of HBO, Right; from 135pixels/REX/Shutterstock.

King’s Landing, a.k.a. Dubrovnik, Croatia.

Left; courtesy of HBO, Right; by Paul Shio.

King’s Landing, a.k.a. Dubrovnik, Croatia.

Left; courtesy of HBO, Right; by Paul Shio.

Great Pit of Daznak, a.k.a. Seville, Spain.

Left; by Botond Horvath/REX/Shutterstock, Right; by Nick Wall/Courtesy of HBO.

Astapor, a.k.a. Ait Benhaddou, Souss-Massa-Drâa, Morocco.

Left; from imageBROKER/REX/Shutterstock, Right; courtesy of HBO.

Game of Thrones has spent seven seasons dazzling fans with international location after location. From the frosty extremes of Iceland to the dusty hot cities of Spain and Northern Africa, HBO has spared no expense in turning the wonders of our world into the imagined spectacle of George R.R. Martin’sA Song of Ice and Fire. And though Season 7 has already delivered a number of jaw-dropping new locations—including, briefly, the famous castles of Highgarden and Casterly Rock—they’ve saved the best for last. Scroll through some of the show’s most glorious destinations above, and then read on to find out why the Dragonpit in the Season 7 finale, “The Dragon and the Wolf,” may give Daenerys Targaryen some cause for alarm.

The Dragonpit made its official debut in the Episode 7 trailer, where we see an insane number of main cast members gather in one spot for the first time ever. But as many people have noticed, Daenerys is entirely absent from every speck of finale marketing—trailers, photos, you name it.

But there’s really no point in hosting a major meet-up of (almost) all the show’s heroes in a place called the Dragonpit without a dragon queen, is there? Some fans even suspect that Dany and Drogon will make their landing in that conspicuously large space, right behind Jon and Tyrion. The real-life location—the picturesque Italica ruins near Seville, Spain—is certainly large enough to house a dragon or even two. (But not three! Sad!)

But if there were any spot in King’s Landing that would make Daenerys wary about showing up at all, it would be the crumbling, ruinous Dragonpit perched high on the hill of the Westerosi capitol. (This is what it looks like in the books.) So of course that’s where Cersei decided to hold this little meeting.

The Dragonpit is a domed structure built hundreds of years ago by Maegor the Cruel as a place to house the fire-breathing beasts. The Targaryen king wanted the dragons—which served as both weapon and ride—nearby in case of rebellion. The structure was massive and beautiful, especially when the dome was lit up at night by dragonfire. But like any animal bred in captivity, generations of dragons started to suffer from spending so much time in the dome. Each generation grew smaller than the last.

Later, during the destructive Targaryen civil war known as the Dance of Dragons, some regular folks in King’s Landing grew angry at the way the ruling class were using their dragons as weapons against each other without any regard for the destruction of property or human life below. Basically this, with dragons.

So one man, known as The Shepherd, led a rebellion of his own after convincing the people of King’s Landing that the dragons were too dangerous and needed to go. Basically this, but with torches.

So thousands of Westerosi subjects stormed the Dragonpit to eradicate the dragon threat. Three of the chained dragons—Shrykos, Morghul, Tyraxes—died, and when another riderless dragon, Syrax, swooped in to save them, he died too. One chained dragon, Dreamfyre, managed to break loose and, wounded and half-blind, tried to fly through the domed ceiling. It only cracked as she frantically tried to escape, then crashed to her death. Five dragons died that night—and many, many more people along with them. The Dragonpit became a smoking ruin. Only four dragons survived the Dance of Dragons in one piece; twenty years later all the dragons were extinct. That is, of course, until Daenerys Targaryen woke Drogon, Viserion, and Rhaegal.

Long story short (and there’s even a little more Dragonpit history to be had), this is the site of worst dragon massacre in history. All that may or may not be covered in the episode—Game of Thrones does occasionally enjoy its history lessons—but the backstory helps explain why it’s a particularly cruel location for Cersei to pick, and one that might make Daenerys, still mourning the loss of Viserion, particularly skittish about flying her two remaining dragons into King’s Landing.